Seaquel
SQL Server error code

SQL Server error 8188

SQL Server raises error 8188 at severity 16, which marks a problem with the query or data that you can correct.

There is already a SQL type for assembly type "%.*ls" on assembly "%.*ls". Only one SQL type can be mapped to a given assembly type. CREATE TYPE fails.
Msg8188
Severity16
Group8000–8999

Source: Database Engine events and errors